Telephone head set



- 1,588,088 w. J. MURDOCK TELEPHONE HEAD SET Fil ed April 18, 1922' Q;Ifivent or i F %MH f Patented May 4, 1926.

UNITED STATES,

WILLIAM J. MURDOCK, on oHnnsnA, MASSACHUSETTS. Y

TELEPHONE HEAD SE Application filednpril 18,1922. SeriaLNo. 554,957;

receivers may be supported over the ears of the wearer and which isadjustable to conform to the wearers head.

this invention reference may be had to the accompanying drawings inwhich Figure 1 is a front elevation of the set, a portion of one of thetelephone receivers being broken away. v

' Figure 2 is an end elevation, the receivers being removed. Y 1

Figure 3 is a section on '1ine=3-'3- of Figure 1. I

Figure 4 is a perspective of a clamping connection plate. c

Figure 5 is a detail section on line 5'5 of Figure 2. g

Referring first to Figure 1, at 1 areindicated'a pair of telephonereceivers of. any suitable or usual construction. v Each receiver ispivoted between a pair of arms 2 and 3 (see Figuresfl and 2) formed froma strip which is bent or folded back on it-i self in contacting relationcentrally as at 4, as shown in Figure 2, to forma fiat comparatively'thin shank or 'stern portion 5, the ends of the strip being thenseparated at point 6 and outwardly curved to form the 4 arms 2 and 3. Atthe ends of these arms are fixed inwardly extending pivot pins 7 .whichmay be 'engaged in suitable pivotal openings in the receivers 1'to'permit .the recelvers to rock on theseplvots.

The side portlons of each shank 5 may be f fastened together by meanssuch as a rivet 8 passed therethrough adjacent the point 6.

These shanks 5 of the receiver supports are For amore complete]understanding of "margins as at '18.

PA E OF IC positely disposed laterally extending ears 1 1,

and between these ears, spring portions as 12, are bent from theplane'of the plate toward parallelism. with each other. Each portion 12is provided with an opening 13 to receive the shank 5 whichis passedthrough both openings '13 of one of the plates" 10. The outer ends ofthe portions 12tend' to spring away from parallelism with each other, sothat the edges of the openings or perforations 13 clamp against the'shank, tending to prevent endwise'movementfthere- .of relative totheplate; By pressingthe outer'ends of the spring portions 12150 gether,theshank maybe released so that it" may be ad usted lengthwiserelativetoithe plate. p y

It is desirable-to permita slight rocking motion of each support 5 andfor this pur' pose the perforations or openingslamay be atound'segmental in shape so that the inner edge of the shank 5 bears at theapex of the segmental portion and the outer edge bears atsome pointalong the circumference of the segment, this belngshown more clearly inFigure 5 in which the shank is shown in full 1 lines in a centralposition in the opening 13 and in dotted lines as rocked over to onesldethereof about the inner edge as a pivot.

This rockingmotion may takeplace quite.

for attachment of the, head bands 15 by which the receivers are sprungtoward each other so as tohold 1n placeagainst the ears of the wearer,the bands lfifextendlng over the top of the wearersheadQ As shown'eachband comprises a'curve'dflat springelement 16 providedwith a cloth covercomprising sections 17 extending on either side of the spring band andstitched together near their They may, however, be formed in anysuitable way without departing from this invention. J i For the purposeof attaching the bands to the plates eachendof each band has "fixedthereto an attaching clip 20 having a socket p portion 21' crimped 'orotherwise fastened over. the end of the band and a flat portion 22overlapping one side of the plate 10 and provided with spacedperforations -13. The perforation 23 at the end of this portion haspassed therethrough a screw 2%, or other pivotal connection as may bedesired, which also passes through a perforation 25 in one of the ears11 and. into a backing or damp ing piece 26 positioned against theopposite face of the plate 10. The otheropening 23 has passedtherethrough a screw 27 which passes through an arcuate slot 28 in theear 11, this slot being struck about the center of the opening 25 as acenter. The screw 27 also is threaded into the piece 26. By this meanseach fastening member 21 has a pivotal connection with the plate 10 andits pivotal n'i-ovement is limited by the extent of the slot 28 whilefrictional resistance to its movement may be adjusted by adjusting thescrews 24 and 27. Thus the central portions of the head bands 15 may bemoved to approach or recede from each other as may .be desired bythewear'er.

Having thus described an embodiment of this invention it should beevident that many changes and modifications may be made therein withoutdeparting from its spirit or scope as defined by the appended claims.

I claim:

llIn a device not the class described, a strip folded back on itself in.contacting relation to v.i orm a. shank portion, the ends oi said stripbeyond said shank portion being spaced apart to receiveand supportbetween them a telephone receiver.

2. In a device of the class described, a strip bent back on, itself toform a shank portion, the ends of said strip beyond said shank portionbeing spaced apart to receive and support between them a telephonereceiver, and means for supporting said shank portion for rockingmovement on an axis lengthwise of said shank portion at one side ofits'c'en'tral axis.-

*3. In a device of the class described, a support for a telephonereceiver having a and ineans for supporting said portion with capabilityoi rec-king about one edge as "an :lXlS.

4-. in adcvice head band, a p

of the class described, a fixed'to each end of said band, each p havinga pair of spaced sitiring' portions extending outwardly therefrom, andeach portion having av segmental opening 'tlieretlirougli, and atelephone re ceiver support having a flat shank passed through theopenings of each plate, said portions being normally sprung to prevente'ndwise movement of said shanks, but said segmental openings permittinga limited "rocking motion tili'er eoi.v

' In -cl'evieepi the elass descnibed,

I support. shank portion formed of rectangular section, v

head band, a plate fixed to each end of said band, each plate having apair of spaced having a shank of different cross section from the shapeof said perforations passed through the perforations ofthe springportions of each plate, said spring portions normally preventing endwisemovement of said shank but the shape of said perforations per.- mittinglimited rocking motion thereof.

6. In a device 01" the class described, a pair of plates, a telephonereceiver supported by each of said plates, a pair or head bands eachpivoted at rnnposite ends to said plates, and means independent of saidreceivers for limiting the pivotal movements of said bands relative tosaid plates.

7. In adevice oi the class described, a pair of plates for supportingtelephone re ceivers, a pair of head bands each pivoted at oppositeendsto sa-idplates, and pin and slot connections between said bands andplates adjacent their pivotal connections.

8. In a device of the class described, a pair of plates for supportingtelephone receivers, a. pair of head bands overlapping one side of eachof said plates at their ends, a clamping piece positioned on theopposite side of each plate opposite each band, a screw passing throughthe end of each band, a plate and a clamping piece to furnish a pivotalconnection between each band and plate, and a screw passing througheachband a slot in a plate and into one of said clamping pieces to limit thepivotal motion of each band, and to impart an adjustable frictionalresistance to such motion.

9. In a device of the class described, means for connecting head bandsto the shank of 'a telephone receiver support, which comprises a platehaving laterally extending ears to which the ends of the head bands arepivotally attached, and spaced perforated portions between said earsbent toward parallel relation to receive through said perforations theshank oi' said telephone receiver 10'. In a device o f'the classdescribed, means for C01111Q6t111g head bands to the shank-of atelephone receiver support which grip said shank against axial "movementtherethtrough;

' ll ln'ia device of :the class described, means? niiectin g head-.hancls to "the 1,583,088 1 a V I I 8;

shank of a telephone receiver support, which Ward parallelism with eachother, and each means comprises a plate having laterally exportion beingperforated to receive the vtending ears, each ear having aperfor-ationshank of'the receiver support therethrongh. 1

to receive a pivot for a head band and a, slot In testimonyrwher'eof Ihave afiixecl my for a pm and slot connection to linntthe signature.plvotal movement of sand band, portions of said plate between said earsbeing bent lo- WVILLIAM J. MURDOC K

